From: Gregory CLEMENT <gregory.clement@free-electrons.com>
To: Chen-Yu Tsai <wens@csie.org>
Cc: linux-sunxi <linux-sunxi@googlegroups.com>,
Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
devicetree <devicetree@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Shuge <shuge@allwinnertech.com>,
Meng Zhang <kevin@allwinnertech.com>,
yhf@merrii.com, ctl@merrii.com
Subject: Re: [linux-sunxi] Re: [PATCH 3/6] ARM: dts: sunxi: Add Allwinner A80 dtsi
Date: Wed, 24 Sep 2014 09:18:16 +0200 [thread overview]
Message-ID: <54227038.2020805@free-electrons.com> (raw)
In-Reply-To: <CAGb2v64voZpK_82wtkErRowR0vjEUALNUwvCx_sd8Q5wb4Hq-g@mail.gmail.com>
Hi Chen-Yu,
>>> +
>>> + memory {
>>> + reg = <0x20000000 0x40000000>;
>>
>> Usually, what we put there was the maximum amount of RAM that can be
>> handled by the SoC. I think that it can go above 1GB
>
> With LPAE, it can handle 8GB. But the DT won't take 64bit values.
> I'm not sure how to get it in. I'll look around for examples.
You can have a look on what we did for Armada XP:
arch/arm/boot/dts/armada-370-xp.dtsi
arch/arm/boot/dts/armada-xp.dtsi
arch/arm/boot/dts/armada-xp-gp.dts
I created a skeleton64.dtsi for this case
Gregory
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
WARNING: multiple messages have this Message-ID (diff)
From: Gregory CLEMENT <gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
Cc: linux-sunxi <linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
linux-arm-kernel
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
devicetree <devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-kernel
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Shuge <shuge-0TFLnhJekD6UEPyfVivIlAC/G2K4zDHf@public.gmane.org>,
Meng Zhang
<kevin-0TFLnhJekD6UEPyfVivIlAC/G2K4zDHf@public.gmane.org>,
yhf-HcjymKqD97rQT0dZR+AlfA@public.gmane.org,
ctl-HcjymKqD97rQT0dZR+AlfA@public.gmane.org
Subject: Re: Re: [PATCH 3/6] ARM: dts: sunxi: Add Allwinner A80 dtsi
Date: Wed, 24 Sep 2014 09:18:16 +0200 [thread overview]
Message-ID: <54227038.2020805@free-electrons.com> (raw)
In-Reply-To: <CAGb2v64voZpK_82wtkErRowR0vjEUALNUwvCx_sd8Q5wb4Hq-g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Hi Chen-Yu,
>>> +
>>> + memory {
>>> + reg = <0x20000000 0x40000000>;
>>
>> Usually, what we put there was the maximum amount of RAM that can be
>> handled by the SoC. I think that it can go above 1GB
>
> With LPAE, it can handle 8GB. But the DT won't take 64bit values.
> I'm not sure how to get it in. I'll look around for examples.
You can have a look on what we did for Armada XP:
arch/arm/boot/dts/armada-370-xp.dtsi
arch/arm/boot/dts/armada-xp.dtsi
arch/arm/boot/dts/armada-xp-gp.dts
I created a skeleton64.dtsi for this case
Gregory
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
WARNING: multiple messages have this Message-ID (diff)
From: gregory.clement@free-electrons.com (Gregory CLEMENT)
To: linux-arm-kernel@lists.infradead.org
Subject: [linux-sunxi] Re: [PATCH 3/6] ARM: dts: sunxi: Add Allwinner A80 dtsi
Date: Wed, 24 Sep 2014 09:18:16 +0200 [thread overview]
Message-ID: <54227038.2020805@free-electrons.com> (raw)
In-Reply-To: <CAGb2v64voZpK_82wtkErRowR0vjEUALNUwvCx_sd8Q5wb4Hq-g@mail.gmail.com>
Hi Chen-Yu,
>>> +
>>> + memory {
>>> + reg = <0x20000000 0x40000000>;
>>
>> Usually, what we put there was the maximum amount of RAM that can be
>> handled by the SoC. I think that it can go above 1GB
>
> With LPAE, it can handle 8GB. But the DT won't take 64bit values.
> I'm not sure how to get it in. I'll look around for examples.
You can have a look on what we did for Armada XP:
arch/arm/boot/dts/armada-370-xp.dtsi
arch/arm/boot/dts/armada-xp.dtsi
arch/arm/boot/dts/armada-xp-gp.dts
I created a skeleton64.dtsi for this case
Gregory
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
next prev parent reply other threads:[~2014-09-24 7:18 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-21 14:58 [PATCH 0/6] ARM: sunxi: Add basic support for Allwinner A80 SoC Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` [PATCH 1/6] ARM: sunxi: Introduce Allwinner A80 support Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` [PATCH 2/6] ARM: sunxi: Add debug uart used by sun9i (Allwinner A80) Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-24 6:39 ` Maxime Ripard
2014-09-24 6:39 ` Maxime Ripard
2014-09-24 6:39 ` Maxime Ripard
2014-09-21 14:58 ` [PATCH 3/6] ARM: dts: sunxi: Add Allwinner A80 dtsi Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-24 6:37 ` Maxime Ripard
2014-09-24 6:37 ` Maxime Ripard
2014-09-24 6:37 ` Maxime Ripard
2014-09-24 7:14 ` [linux-sunxi] " Chen-Yu Tsai
2014-09-24 7:14 ` Chen-Yu Tsai
2014-09-24 7:14 ` Chen-Yu Tsai
2014-09-24 7:18 ` Gregory CLEMENT [this message]
2014-09-24 7:18 ` [linux-sunxi] " Gregory CLEMENT
2014-09-24 7:18 ` Gregory CLEMENT
2014-09-24 7:27 ` [linux-sunxi] " Chen-Yu Tsai
2014-09-24 7:27 ` Chen-Yu Tsai
2014-09-24 7:27 ` Chen-Yu Tsai
2014-09-24 11:53 ` [linux-sunxi] " Chen-Yu Tsai
2014-09-24 11:53 ` Chen-Yu Tsai
2014-09-24 11:53 ` Chen-Yu Tsai
2014-09-24 12:36 ` [linux-sunxi] " Gregory CLEMENT
2014-09-24 12:36 ` Gregory CLEMENT
2014-09-24 12:36 ` Gregory CLEMENT
2014-09-21 14:58 ` [PATCH 4/6] ARM: dts: sun9i: Add A80 Optimus Board support Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` [PATCH 5/6] devicetree: bindings: Add vendor prefix for Merrii Technology Co., Ltd Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` [PATCH 6/6] devicetree: bindings: Document supported Allwinner sunxi SoCs Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-21 14:58 ` Chen-Yu Tsai
2014-09-24 6:41 ` [PATCH 0/6] ARM: sunxi: Add basic support for Allwinner A80 SoC Maxime Ripard
2014-09-24 6:41 ` Maxime Ripard
2014-09-24 6:41 ` Maxime Ripard
2014-09-24 10:40 ` Chen-Yu Tsai
2014-09-24 10:40 ` Chen-Yu Tsai
2014-09-24 10:40 ` Chen-Yu Tsai
2014-09-24 13:28 ` Maxime Ripard
2014-09-24 13:28 ` Maxime Ripard
2014-09-24 13:28 ` Maxime Ripard
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